Machine for manufacturing pneumatic tires.



A. E. VINCENT. MACHINE FOR MANUFACTURING PNEUMATIC TIRES.

. APPLICATION FILED JAN. 8, 1907.

906,588. Patented Dec. 15,1908.

2 SHEETS-SHEET 1.

FIGJ- FlG 2 A. E. VINCENT.

MACHINE FOR MANUFACTURING PNEUMATIC TIRES.

APPLICATION FILED JAN. 8, 1907.

906,588. Patented Dec. 15, 1908 2 SHEETS-SHEET 2.

WWNESSEB INVENTR m-xiewwg stretching and shapin devices under the re-' AMEDEE ETIENNE VINCENT, OF'NOISY-LE-SEC, FRANCE.

MACHINE FOR MANUFACTURING PNEUMATIC TIRES.

Specification of Letters Patent.

I Application filed January 8, 1907.

' Patented Dec. 15, 1908.

Serial No. 351,392.

the machine forming the sub ect of- Letters Patent No. 794,473.

The invention is intended primarily to permit the application of a system of sha ing and rehminarily tensioning the rubber coate fabrics to all the diameters and sha es of pneumatic tires as well as to all rub er goods and fabrics in whatever Way or to whatever extent the rubber is applied and whatever their resistance and their elasticity. This result is insured by a special arrangement of stretching and shaping devices placed in front of the large finishin matrix or shaping core on which the tire is formed which arrangement enables simultaneously the certain and progressive regulation, even while in operation of the tension of the canvas or the rubber of forming successively the preliminary shape and modifying, according to circumstances the profile or profiles of this preliminary shape.

The improvement further consists in an apparatus which prevents the recoil of the action of the fabric, etween two stages of manufacture and which permits of giving to the canvas the required tension at the commencement of its manufacture.

In the annexed drawings, Figures 1 to 3 illustrate by way of example an embodiment of the apparatus including the shaping and stretchin devices. Fig. 1- is an elevation of the comp ete arran ement, Fig. 2 is a plan and Fig. 3 is a'deta' in section. Figs. 4and 5 show in elevation and in plan the means for preventing recoil.

Referring to Figs. 1 to 3, it will be seen that in order to var the tension of the rubber fabric, even while in operation, it suffices to pass this fabric, before it arrives at the matrix n, on an extensible stretching roller 16 constituted for example of a certain number of equal segments; these segments may be simultaneously brought towards or away from the axis of rotation 18, each of them being carried on two oblique symmetrical double hinged links 19, as seen best inFig. 3. All

the links on the same side constitute an arbrel a and are jointed similar'to the ribs of the said frame on one socket 20. In moving the socket support to or from the middle of the axis, one o ens or closes, more or less, the roller, the periphery of which is in reality a regular poly on with curved edges. The extension of tl ie stretching roller may be ob- Viously realized by any other mechanical arrangement, and in each case .therelation of the diameter of the end rollers of-the stretching-sha ing apparatus being modified because t e one of these diameters is always fixed while the other varies, the regulation of the tension will be assured.

To vary, accordin to the case, the rofile or profiles of the pre iminary shape, t ere is employed one or more rollers a: and y of adjustable curvature. In the drawings onl one of these rollers is illustrated as being a justable, the roller 2; being of ermanent shape. Theroller 'y is constitute of a central bulbed roller andby other rollers y and y of smaller diameter which may be brought towards or from the central roller 3 at will. The osition of the intermediary axes can be regu ated at will and the curves of these rollers are desi ed to' give the progressive shaping. It wi be thus seen that by means of the bulbed rollers of adjustable curvature, the apparatus ermits of varying as'much as desire the ra ius of the curves of the surfaces of the she ed fabrics.

By the combination of the means which have been described there may be thus satisfied all the conditions of manufacture of all diameters and profiles of pneumatic tires and .for all qualities of fabric or rubber.

Figs. 4 and 5 show an arrangement by means of which the fabric may be applied at any desired moment on the last shaping roller 17 to prevent the recoil of said fabric when a traction is no more exerted upon it. This arrangement may comprise if desired a concave block m of suitable curvature or-a concave roller which is a plied on the shaper at a given moment in sue a manner that the fabric is held between the shaper 17 and the block. The block or concave roller is furnished with spikes etc. the action'of which prevents sli The shaper 17 in this case is smooth. ternatively, the spikes may be formed on the shaper, the block or concave roller being then smooth. Following the arrangement in the drawing, the block m forms rangement similarto the frame of an um the end of an oscillating lever keyed on the shaft 0 parallel to the other shafts of the stretching shaping system. This shaftmay turn through a suitable angle and be manually 0 erated for exam le by means of a hand ever p: another lever g fixed on the shaft 0 and bearing an adjustable counterpoise ermits of the easy balancing of all these evices and may be held in the raised position by means of a stop.

Having now described my invention, What I claim as new and desire to secure by Letters Patent is:

1. In a machine for manufacturing pneumatic tires, means for shaping and tensioning the rubber fabric comprising an extensible stretching roller, intermediary bulbed rollers 'mounted on adjustable axes parallel to the end rollers, andbulbed rollers of adjustable curvature constituted of a central bulbed roller and'of other rollers of much smaller diameter which may be brought towards or from the central roller substantiall scribed and for the purpose set fort as debrought towards or from the central ro er, a

concave block providedwith spikesadapted to be applied on the shaper,' an oscillating le-' ver on which said block is mounted, and 0p- 7 erative means connected to said oscillating lever and adapted to apply tlie 210015- pn tgeescri e an ort e shaper, substantially as purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

AMEDEE ETIENNE VINCENT;

Witnesses:

ANTOINE LAVOIE, Hanson 0. Coxn 

